学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
根据所听的问句,选出正确的答句,读两遍。
(    )(1)A. Yes, I do.               B.Yes, he does.       C. Yes, she does.
(    )(2)A .Yes, it does.             B. No, I don’t.       C.No, she doesn’t.[来
(    )(3)A. No, she doesn’t.         B. It can jump.       C.I can jump.
(    )(4)A. Yes, there is.            B. No, it isn’t.     C.Yes,they are.
(    )(5)A. Me too.                  B. I’m sorry.         C.All right.
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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